Nisour Square is a public square located in Baghdad, Iraq. It gained international attention due to a tragic incident on September 16, 2007, when employees of Blackwater Worldwide, a private security firm, opened fire on Iraqi civilians, resulting in multiple deaths and injuries. The event sparked widespread outrage and raised questions about the role of private military contractors in conflict zones. Following the incident, there were legal proceedings against the involved personnel, and it became a significant point of discussion regarding U.S. military operations and accountability in Iraq.